JPH0357342Y2 - - Google Patents
Info
- Publication number
- JPH0357342Y2 JPH0357342Y2 JP1982187077U JP18707782U JPH0357342Y2 JP H0357342 Y2 JPH0357342 Y2 JP H0357342Y2 JP 1982187077 U JP1982187077 U JP 1982187077U JP 18707782 U JP18707782 U JP 18707782U JP H0357342 Y2 JPH0357342 Y2 JP H0357342Y2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- copper
- aluminum alloy
- welding
- gun
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910000838 Al alloy Inorganic materials 0.000 claims description 28
- 238000003466 welding Methods 0.000 claims description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 19
- 229910052802 copper Inorganic materials 0.000 claims description 19
- 239000010949 copper Substances 0.000 claims description 19
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 16
- 239000000498 cooling water Substances 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000005304 joining Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【考案の詳細な説明】
(産業上の利用分野)
本考案はアルミ合金製溶接ガンの改良に関し、
冷却効率を高めるとともに、異種金属間の電極電
位差による接触抵抗変化を減少し、耐〓性を向上
させることを目的とする。[Detailed description of the invention] (Industrial application field) This invention relates to the improvement of aluminum alloy welding guns.
The purpose is to increase cooling efficiency, reduce contact resistance changes due to electrode potential differences between dissimilar metals, and improve resistance.
(従来の技術)
溶接ガンの軽量化を図るために使用されている
アルミ合金製溶接ガンにおいては他の溶接ガンと
同様に作動時に生ずる電極チツプと、アームの発
熱のため溶接ガン全体が高温化し、連続しての使
用は不可能であつた。(Prior art) In aluminum alloy welding guns used to reduce the weight of welding guns, the entire welding gun becomes hot due to the electrode tip and arm heat generated during operation, as with other welding guns. , continuous use was impossible.
そのため、従来は特公昭45−2449号公報に記載
されているように、アルミ合金のガンアームの内
部に銅管を鋳込み、該銅管に冷却水を流通させて
ガンアーム及び電極チツプを冷却することが考え
られるに至つた。 Therefore, conventionally, as described in Japanese Patent Publication No. 45-2449, a copper tube was cast inside an aluminum alloy gun arm, and cooling water was passed through the copper tube to cool the gun arm and electrode chip. I've come to think of it.
(考案の解決すべき課題)
しかし上記した従来技術による場合には、鋳造
過程で約900℃前後の熱影響をうけると銅管の表
面に付着している水分や油分等の不純物がガス状
に蒸発し、また銅管自体も高温で酸化し、その結
果アーム母材と銅管との間に巣状の荒れを生じて
ガンアームと銅管との密着が悪くなるために冷却
機能を著しく低下させる場合が多く、大溶接電流
を流した場合やフル稼動させた場合には異状過熱
をおこし作業性を著しく阻害すること、さらにア
ルミと銅合金との電位差によつて耐〓性が阻害さ
れるために実際の使用には耐えないこと、さらに
機械的強度が弱いこと、等の問題があつた。(Issues to be solved by the invention) However, in the case of the above-mentioned conventional technology, impurities such as moisture and oil adhering to the surface of the copper tube become gaseous when exposed to heat of around 900℃ during the casting process. It evaporates, and the copper tube itself oxidizes at high temperatures, resulting in nest-like roughness between the arm base material and the copper tube, which impairs the adhesion between the gun arm and the copper tube, significantly reducing the cooling function. In many cases, when a large welding current is applied or when the welding is operated at full capacity, abnormal overheating occurs and workability is significantly impaired, and furthermore, the electrical potential difference between aluminum and copper alloy impedes resistance to corrosion. However, there were problems such as not being able to withstand actual use and having weak mechanical strength.
そこでアルミ合金製のガンアームと同質のアル
ミ合金製冷却パイプを用いることも試みられた
が、その場合には冷却系路内でイオン化傾向の一
番高いアルミが腐食し、その結果腐食部分が溶出
し、冷却水の流れを妨げるため溶接ガンの連続動
作を不可能にするといつた事態を生じた。 Therefore, an attempt was made to use an aluminum alloy cooling pipe of the same quality as the aluminum alloy gun arm, but in that case, the aluminum with the highest ionization tendency corroded in the cooling system passage, and as a result, the corroded part leached out. This caused a situation in which the continuous operation of the welding gun became impossible because the flow of cooling water was obstructed.
そこで本考案者らは上記した不都合をさらに改
善すべく種々の工夫を試みた。 Therefore, the inventors of the present invention attempted various measures to further improve the above-mentioned disadvantages.
たとえばアルミニウム製冷却パイプを、電極チ
ツプと同種の銅あるいは銅合金製パイプにかえ、
これをアルミ合金製ガンアームの側面に溶接する
ことにより冷却効率の向上と製造コストの低減を
はかることも試みた。 For example, replacing an aluminum cooling pipe with a copper or copper alloy pipe of the same type as the electrode chip,
We also attempted to improve cooling efficiency and reduce manufacturing costs by welding this to the side of the aluminum alloy gun arm.
しかし、アルミ合金製ガンにおいて、その冷却
パイプの一部を銅あるいは銅合金として溶接する
ことは、アルミニウムと銅あるいは銅合金との異
種金属による接触腐食を生じたり、又銅合金とア
ルミとの適切な溶接方法がないため、溶接時の熱
のため合せ部分が剥離するといつた困難な問題に
遭遇した。 However, welding a part of the cooling pipe of an aluminum alloy gun with copper or copper alloy may cause contact corrosion due to dissimilar metals between the aluminum and copper or copper alloy, or may cause improper welding of the copper alloy and aluminum. Because there is no standard welding method, they encountered difficult problems such as the mating parts peeling off due to the heat during welding.
(課題を解決するための手段)
そこで本考案は上記した種々の問題点を解決
し、冷却効率を高めるとともに異種金属間の電極
電位差による接触抵抗変化を減少し、耐〓性を向
上させ、さらにコストの低減をはかるようにした
ものであつて、具体的にはアルミ合金性ガンアー
ムの側面に冷却水パイプを配設した溶接ガンにお
いて、上記冷却水パイプは銅または銅合金パイプ
の外周面をアルミ合金パイプで被覆し、該アルミ
合金パイプをガンアームの側面に接合してなるア
ルミ合金製溶接ガンに関する。(Means for Solving the Problems) Therefore, the present invention solves the various problems mentioned above, increases cooling efficiency, reduces contact resistance change due to electrode potential difference between dissimilar metals, improves resistance to corrosion, and further improves cooling efficiency. This is intended to reduce costs. Specifically, in a welding gun in which a cooling water pipe is arranged on the side of an aluminum alloy gun arm, the cooling water pipe is a copper or copper alloy pipe whose outer peripheral surface is made of aluminum. This invention relates to an aluminum alloy welding gun that is coated with an alloy pipe and joined to the side surface of a gun arm.
(作用)
アルミ合金製ガンアームの側面に接合される冷
却水パイプは銅または銅合金パイプの外周面を上
記ガンアームと同質のアルミ合金パイプで被覆し
ているので、ガンアームの側面に対する接合は直
接銅または銅合金パイプではなしに、アルミ合金
パイプをアルゴンアーク溶接するなどして容易に
接合でき、また冷却水はアルミに接触しないため
に腐食がなく、腐食部分の溶出による冷却水の水
流妨害のおそれがなくなる。(Function) The cooling water pipe that is joined to the side of the gun arm made of aluminum alloy is a copper or copper alloy pipe whose outer circumferential surface is covered with an aluminum alloy pipe of the same quality as the gun arm. Aluminum alloy pipes can be easily joined by argon arc welding instead of copper alloy pipes, and since the cooling water does not come into contact with the aluminum, there is no corrosion, and there is no risk of the cooling water flow being obstructed by the elution of corroded parts. It disappears.
(実施例)
以下本考案の具体的な内容を図面の実施例をも
とに説明する。図において、1は溶接ガン、3は
先端に電極チツプ4aを有するアルミ合金製ガン
アーム、5は先端に電極チツプ4bを有するピス
トンロツドを示し、該ピストンロツドの後方に取
りつけられたシリンダ7により電極チツプ4bを
被溶接物Wを介して電極チツプ4aに接離させる
ように構成したものである。(Example) The specific content of the present invention will be explained below based on the example shown in the drawings. In the figure, 1 is a welding gun, 3 is an aluminum alloy gun arm having an electrode tip 4a at its tip, and 5 is a piston rod having an electrode tip 4b at its tip. It is constructed so that it can be brought into contact with and separated from the electrode chip 4a via the object W to be welded.
アルミ合金製溶接ガンアーム3の側面には冷却
水分岐管6から延設された冷却パイプがガンアー
ム3の側面に沿つて配設され、しかもその冷却パ
イプの先端は、電極チツプ4aに至つている。 A cooling pipe extending from a cooling water branch pipe 6 is disposed along the side surface of the aluminum alloy welding gun arm 3, and the tip of the cooling pipe reaches the electrode tip 4a.
さらに、冷却パイプは第2図に断面で示したよ
うに、冷却水通路用として銅製または銅合金製の
パイプ8が用いられる。 Further, as the cooling pipe, as shown in cross section in FIG. 2, a pipe 8 made of copper or copper alloy is used for the cooling water passage.
さらに上記した銅または銅合金パイプ8の外周
面は前記したガンアームと同質のアルミ合金パイ
プ2にて被覆される。 Furthermore, the outer peripheral surface of the copper or copper alloy pipe 8 described above is covered with an aluminum alloy pipe 2 of the same quality as the gun arm described above.
アルミ合金パイプ2による被覆は、アルミニウ
ム合金製パイプの内周側に、外径がアルミニウム
合金製パイプの内径と略等しい銅または銅合金製
のパイプを上記アルミニウム合金製パイプの側面
開口部から軸方向に圧入しておこなわれる。 Covering with the aluminum alloy pipe 2 is performed by inserting a copper or copper alloy pipe whose outer diameter is approximately equal to the inner diameter of the aluminum alloy pipe on the inner peripheral side of the aluminum alloy pipe in the axial direction from the side opening of the aluminum alloy pipe. This is done by press-fitting it into the
次いでこれをガンアーム3の形状に合わせて曲
げ加工を施した後、ガンアーム3の側面にアルゴ
ンアーク溶接等の手段により接合する。 Next, this is bent to match the shape of the gun arm 3, and then joined to the side surface of the gun arm 3 by means such as argon arc welding.
尚、上記はC型溶接ガンについて説明したがX
型溶接ガン、その他についても同様の応用が得ら
れることはいうまでもない。 In addition, although the above explanation was about the C type welding gun,
Needless to say, similar applications can be obtained for type welding guns and others.
(考案の効果)
本考案と上記したように、アルミ合金製ガンア
ームの側面に冷却水パイプを配設したものである
ために、従来のようにアームの内部に銅パイプを
鋳込む場合に比べて加工性が良く、また機械的強
度が高い。しかも上記冷却水パイプは銅または銅
合金パイプの外周面をアルミ合金パイプにて被覆
したために、熱伝導効率がよく、とくに直接銅ま
たは銅合金パイプをガンアームに接合する場合に
比べて著しく接合性が良好で、しかもガンアーム
の冷却効果をより一層向上させることができる。(Effects of the invention) As described above, the cooling water pipe is installed on the side of the aluminum alloy gun arm, so compared to the conventional case where a copper pipe is cast inside the arm. Good workability and high mechanical strength. In addition, the above cooling water pipe has a copper or copper alloy pipe whose outer circumferential surface is covered with an aluminum alloy pipe, so it has good heat conduction efficiency, and in particular, the bonding performance is significantly higher than when directly joining a copper or copper alloy pipe to the gun arm. This is good, and the cooling effect of the gun arm can be further improved.
また冷却水はアルミ部分に接触しないためにア
ルミと銅合金との電位差による耐〓性阻害によつ
て生ずる腐食の問題がなく、しかも従来のアルミ
パイプ使用の場合のような腐食部分の溶出による
冷却パイプ内における水流妨害のおそれも全くな
い。 In addition, since the cooling water does not come into contact with the aluminum parts, there is no corrosion problem caused by inhibition of corrosion resistance due to the potential difference between the aluminum and copper alloy, and there is no problem of corrosion caused by the elution of the corroded parts, unlike when using conventional aluminum pipes. There is no risk of water flow obstruction within the pipe.
さらに溶接ガンの製造工程も簡略化でき、コス
トの低減化を実現できる。 Furthermore, the manufacturing process of the welding gun can be simplified and costs can be reduced.
第1図は、本考案の一実施例を示す断面図であ
る。
第2図は、第1図におけるA−A断面図をそれぞ
れ示す。
2……アルミ合金パイプ、3……ガンアーム、
8……銅あるいは銅合金製パイプ。
FIG. 1 is a sectional view showing an embodiment of the present invention. FIG. 2 shows a sectional view taken along the line AA in FIG. 1, respectively. 2... Aluminum alloy pipe, 3... Gun arm,
8...Pipe made of copper or copper alloy.
Claims (1)
プを配設した溶接ガンにおいて、上記冷却水パイ
プは、銅または銅合金パイプの外周面をアルミ合
金パイプで被覆し、該 アルミ合金パイプをガン
アームの側面に接合してなるアルミ合金製溶接ガ
ン。 In a welding gun in which a cooling water pipe is installed on the side of an aluminum alloy gun arm, the cooling water pipe is a copper or copper alloy pipe whose outer peripheral surface is covered with an aluminum alloy pipe, and the aluminum alloy pipe is installed on the side of the gun arm. Aluminum alloy welding gun made by joining.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18707782U JPS5989674U (en) | 1982-12-10 | 1982-12-10 | Aluminum alloy welding gun |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18707782U JPS5989674U (en) | 1982-12-10 | 1982-12-10 | Aluminum alloy welding gun |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5989674U JPS5989674U (en) | 1984-06-18 |
JPH0357342Y2 true JPH0357342Y2 (en) | 1991-12-26 |
Family
ID=30403914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18707782U Granted JPS5989674U (en) | 1982-12-10 | 1982-12-10 | Aluminum alloy welding gun |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5989674U (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4794330B2 (en) * | 2006-03-10 | 2011-10-19 | 本田技研工業株式会社 | Transformer and manufacturing method thereof |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5929812U (en) * | 1982-08-18 | 1984-02-24 | 日本電気株式会社 | FM modulation circuit |
-
1982
- 1982-12-10 JP JP18707782U patent/JPS5989674U/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5929812U (en) * | 1982-08-18 | 1984-02-24 | 日本電気株式会社 | FM modulation circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS5989674U (en) | 1984-06-18 |
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